Price rounding

I wish I have the option to round the price with a fixed form (eg, *.99, *.95, *5.00, *0.00 ... etc) and can chose whether I want it to be round up, round down, or nearest.

These are example prices now:

273.62

180.02

I wish I can control them to be like:

(round nearest with form *.00)

275.00

180.00

or (round low with form 9.99)

269.99

179.99

Currently, I can use an external app to achieve this now. But the problem is that if I check "update price" in your app then the price will be overwritten next sync. If I do not check "update price" then I risk losing money due to new higher B2B price. So, it will not work perfectly unless it is a built-in feature.